40 Words That Start With X

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arthobbit/iStock via Getty Images

When the lexicographer Dr. Samuel Johnson put together his Dictionary of the English Language in 1755, there weren't a lot of words that started with X; he even included a disclaimer at the bottom of page 2308 that read, “X is a letter which though found in Saxon words, begins no word in the English language.” Noah Webster went one better when he published his Compendious Dictionary in 1806 that included a single X-word, xebec, defined as “a small three-masted vessel in the Mediterranean Sea.” Although, by the time he compiled his landmark American Dictionary in 1828, that total had risen to 13.

X has never been a common initial letter in English, and even with today’s enormous vocabulary you can still only expect around 0.02 percent of the words in a dictionary to be listed under it. But why not try boosting your vocabulary with these 40 words that start with X.

1. X

On its own, the letter X is listed in the Oxford English Dictionary as a verb meaning “to cross out a single letter of type.” X. X. in Victorian slang meant “double-excellent,” while X. X. X. described anything that was “treble excellent.”

2. XANTHIPPE

Xanthippe was the name of Socrates’ wife, who, thanks to a number of Ancient Greek caricatures, had a reputation for henpecking, overbearing behavior. Consequently her name can be used as a byword for any ill-tempered or cantankerous woman or wife—as used in Shakespeare’s Taming of the Shrew.

3. XANTHOCOMIC

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Xanthos was the Ancient Greek word for yellow, and as such is the root of a number of mainly scientific words referring to yellow-colored things. So, if you’re xanthocomic, you have yellow hair; if you’re xanthocroic you have fair hair and pale skin; and if you’re xanthodontous, you have yellow teeth.

4. X-CATCHER

In old naval slang, an X-catcher or X-chaser was someone who was good at math—literally someone good at working out the value of x.

5. X-DIVISION

Victorian slang for criminals or pickpockets, or people who make a living by some underhand means.

6. X-DOUBLE-MINUS

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1960s slang for something really, really terrible.

7. XENAGOGUE

Derived from the same root as xenophobia, a xenagogue is someone whose job it is to conduct strangers or to act as a guide while…

8. XENAGOGY

… a xenagogy is a guidebook.

9. XENIAL

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The adjective xenial is used to describe a friendly relationship between two parties, in particular between a hospitable host and his or her guests, or diplomatically between two countries.

10. XENIATROPHOBIA

Don’t like going to see doctors you don’t know? Then you’re xeniatrophobic.

11. XENIUM

A xenium is a gift or offering given to a stranger, which in its native Ancient Greece would once have been a lavish feast or a refreshing spread of food and fruit. In the 19th century art world, however, xenium came to refer to a still-life painting depicting something like a extravagant display of food or a bowl of fruit.

12. XENIZATION

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A 19th century word meaning “the act of traveling as a stranger.”

13. XENOCRACY

A government formed by foreigners or outsiders is a xenocracy. A member of one is a xenocrat.

14. XENODOCHEIONOLOGY

Defined as “the lore of hotels and inns” by Merriam-Webster.

15. XENODOCHIUM

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A guesthouse or hostel, or any similar stopping place for travelers or pilgrims.

16. XENODOCHY

A 17th century word for hospitality. If you’re xenodochial then you like to entertain strangers.

17. XENOGLOSSY

The ability to speak a language that you’ve apparently never learnt.

18. XENOLOGY

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The scientific study of extraterrestrial phenomena is xenology. The study of extraterrestrial life forms is xenobiology.

19. XENOMANIA

The opposite of xenophobia is xenomania or xenophilia, namely an intense enthusiasm or fondness for anything or anyone foreign.

20. XENOMORPH

Something unusually or irregularly shaped is a xenomorph—which is why it’s become another name for the eponymous creature in the Alien film franchise.

21. XENOTRANSPLANTATION

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Transplanting organic matter from a non-human into a human (like a pig’s heart valve into a human heart) is called xenotransplantation. Whatever it is that’s transplanted is called the xenograft.

22. XERIC

An ecological term used to describe anywhere extremely dry or arid. If it’s xerothermic, then it’s both dry and hot.

23. XERISCAPE

If you live in a xeric area, then you’ll have to xeriscape your garden. It’s the deliberate use of plants that need relatively little moisture or irrigation to landscape an arid location.

24. XEROCHILIA

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The medical name for having dry lips. Having a dry mouth is xerostomia.

25. XEROCOPY

A xerographic copy of a document—or, to put it another way, a photocopy.

26. XEROPHAGY

The eating of dry food is xerophagy. It mightn’t sound like it, but it was originally a religious term.

27. XESTURGY

The proper name for the process of polishing.

28. XILINOUS

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Something described as xilinous resembles or feels like cotton …

29. XIPHOID

… while something described as xiphoid resembles a sword.

30. XOANON

Derived from the Greek for “carve” or “scrape,” a xoanon is a carved idol of a deity.

31. XTAL

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An abbreviation of “crystal,” according to the OED.

32. XYLOGRAPHER

A 19th century word for a wood engraver.

33. XYLOID

Why say that something is “woody” when you can say that it’s xyloid?

34. XYLOPOLIST

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A 17th century formal name for a timber merchant.

35. XYLOTOMOUS

Describes anything or anyone particularly good at wood-cutting or wood-boring.

36. XYRESIC

Means “razor-sharp.”

37. XYROPHOBIA

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The fear of being close to or touching sharp implements.

38. XYLANTHRAX

Nowhere near as nasty as it sounds, this is just an old name for what we now call charcoal.

39. XYSTUS

A type of covered walkway or portico.

40. X.Y.Z.

Late 19th century slang for a journalist who takes on any work going, or else 18th century slang for a dandyish or “exquisite” young man.

Celebrate the Holidays With the 2020 Harry Potter Funko Pop Advent Calendar

Funko
Funko

Though the main book series and movie franchise are long over, the Wizarding World of Harry Potter remains in the spotlight as one of the most popular properties in pop-culture. The folks at Funko definitely know this, and every year the company releases a new Advent calendar based on the popular series so fans can count down to the holidays with their favorite characters.

Right now, you can pre-order the 2020 edition of Funko's popular Harry Potter Advent calendar, and if you do it through Amazon, you'll even get it on sale for 33 percent off, bringing the price down from $60 to just $40.

Funko Pop!/Amazon

Over the course of the holiday season, the Advent calendar allows you to count down the days until Christmas, starting on December 1, by opening one of the tiny, numbered doors on the appropriate day. Each door is filled with a surprise Pocket Pop! figurine—but outside of the trio of Harry, Hermione, and Ron, the company isn't revealing who you'll be getting just yet.

Calendars will start shipping on October 15, but if you want a head start, go to Amazon to pre-order yours at a discount.

This article contains affiliate links to products selected by our editors. Mental Floss may receive a commission for purchases made through these links.

More Than 650 New Words Have Been Added to Dictionary.com—Here Are 50 of Them

Online dictionaries can add words a little more quickly than their printed counterparts.
Online dictionaries can add words a little more quickly than their printed counterparts.
Pisit Heng, Pexels

Back in April, Dictionary.com updated its lexicon with a number of terms that had sprung up seemingly overnight, including COVID-19, novel coronavirus, and even rona. Now, as a testament to just how fast language evolves, the online dictionary has added 650 more.

Though the terms aren’t all quite as new as rona, they’ve all recently become prevalent enough to warrant their own dictionary entries. And they’re not all related to public health crises, either. New slang includes amirite, a truncated version of Am I right?; and zhuzh, a verb meaning “to make (something) more lively and interesting, stylish, or appealing, as by a small change or addition” (it can also be used as a noun).

There’s a handful of phrases that describe pets used for service or therapy—assistance animal, comfort animal, and emotional support animal, among others—and a couple that help capture the sometimes bizarre landscape of modern parenting. Sharent, a portmanteau of share and parent, refers to the act of chronicling your child’s life on social media (or a parent who does it); and extravagant methods of publicly announcing an unborn baby’s gender are now so widespread that gender reveal is a dictionary-recognized term. Some terms address racist behaviors—whitesplain and brownface, for example—while others reflect how certain people of color describe their specific ethnicities; Afro-Latina, Afro-Latino, and Afro-Latinx each have an entry, as do Pinay, Pinoy, and Pinxy.

In addition to the new entries, Dictionary.com has also added 2100 new definitions to existing entries and revised another 11,000 existing definitions—making it the site’s largest update ever. Black in reference to ethnicity is now a separate entry from the color black, and lexicographers have also combed through the dictionary to capitalize Black wherever it appears in other entries. They’ve also replaced homosexuality—now often considered an outdated clinical term with a negative connotation—with gayness in other entries, and addict with a person addicted to or a habitual user of. In short, people are constantly making language more inclusive and sensitive, and Dictionary.com is working to represent those changes in the dictionary.

Take a look at 50 of Dictionary.com’s new words and phrases below, and learn more about the updates here.

  1. Af
  1. Afro-Latina
  1. Afro-Latino
  1. Afro-Latinx
  1. Agile development
  1. Amirite
  1. Assistance animal
  1. Battle royale
  1. Bombogenesis
  1. Brownface
  1. Cap and trade
  1. Comfort animal
  1. Community management
  1. Companion animal
  1. Conservation dependent
  1. Conservation status
  1. Contouring
  1. Critically endangered
  1. DGAF
  1. Dunning-Kruger effect
  1. Ecoanxiety
  1. Emissions trading
  1. Emotional labor
  1. Emotional support animal
  1. Empty suit
  1. Extinct in the wild
  1. Filipinx
  1. Filipina
  1. Gender reveal
  1. GOAT
  1. Hodophobia
  1. Information bubble
  1. Ish
  1. Jabroni
  1. Janky
  1. MeToo
  1. Natural language processing
  1. Nothingburger
  1. Off-grid
  1. Pinay
  1. Pinoy
  1. Pinxy
  1. Ratio
  1. Sharent
  1. Swole
  1. Techlash
  1. Therapy animal
  1. Whitesplain
  1. World-building
  1. Zhuzh